Square piping elbow



FIG. 1 is a side perspective view of the square piping elbow;

FIG. 2 is a front face view of the square piping elbow;

FIG. 3 is a back face view of the square piping elbow;

FIG. 4 is a left face view of the square piping elbow;

FIG. 5 is a right face view of the square piping elbow;

FIG. 6 is a top face view of the square piping elbow; and,

FIG. 7 is a bottom face view of the square piping elbow. 

CLAIM The ornamental design for a square piping elbow, as shown and described. 